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05.03.2024

Denim Expert's Goal: 100% wastewater recycling

The announcement of a new effluent treatment plant (ETP) marks a milestone in Denim Expert's journey towards sustainability. This upcoming facility is a testament to the company's dedication to reducing its ecological footprint and safeguarding local ecosystems through advanced water management techniques.

The new Effluent Treatment Plant (ETP) being developed by Denim Expert strives for 100% wastewater recycling. As the ETP rises from concept to reality, Denim Expert embarks on a transition towards its next horizon: aligning with the Zero Discharge of Hazardous Chemicals (ZDHC) Wastewater Guidelines Version 2.0.

The announcement of a new effluent treatment plant (ETP) marks a milestone in Denim Expert's journey towards sustainability. This upcoming facility is a testament to the company's dedication to reducing its ecological footprint and safeguarding local ecosystems through advanced water management techniques.

The new Effluent Treatment Plant (ETP) being developed by Denim Expert strives for 100% wastewater recycling. As the ETP rises from concept to reality, Denim Expert embarks on a transition towards its next horizon: aligning with the Zero Discharge of Hazardous Chemicals (ZDHC) Wastewater Guidelines Version 2.0.

Denim Expert's proactive approach to sustainability has been recognized on a global scale. The company has been named 'New Champion' by the World Economic Forum and has partnered with organizations such as the Sustainable Apparel Coalition (SAC), the United Nations Framework Convention on Climate Change (UNFCCC), and the Ellen MacArthur Foundation's Jeans Redesign program. As one of the first factories to join the Partnership for Cleaner Textile (PaCT) and in the process of implementing the 3E program, Denim Expert is dedicated to achieving 100% water reuse and full reliance on solar energy, further solidifying its commitment to driving positive environmental change.

Quelle:

Denim Expert Ltd.

(c) Perstorp
15.02.2023

Perstorp: Reduction targets for water and waste

Sustainable solutions provider Perstorp has added new corporate sustainability targets, for water and waste, to its sustainability strategy. Its long-term sustainability ambition is to become Finite Material Neutral, which involves water and waste, along with raw materials, energy and catalysts. In 2021 the company set its first 2030 targets, for greenhouse gas emissions (using approved science-based targets) and (eco) toxic impact. Now Perstorp has added new sustainability targets that will address its long-term ambition.

These new 2030 corporate targets (all measured using 2019 as the base year) are:

Sustainable solutions provider Perstorp has added new corporate sustainability targets, for water and waste, to its sustainability strategy. Its long-term sustainability ambition is to become Finite Material Neutral, which involves water and waste, along with raw materials, energy and catalysts. In 2021 the company set its first 2030 targets, for greenhouse gas emissions (using approved science-based targets) and (eco) toxic impact. Now Perstorp has added new sustainability targets that will address its long-term ambition.

These new 2030 corporate targets (all measured using 2019 as the base year) are:

  • 30% absolute reduction of freshwater consumption
  • 30% absolute reduction of hazardous waste directed to disposal
  • 30% absolute reduction of non-hazardous waste directed to disposal

"Fresh water consumption and waste are two areas of big importance in reducing our environmental impact and working toward increased circularity," says Anna Berggren, Vice President Sustainability at Perstorp Group. "Fresh water scarcity is already a fact around the world, and we have a responsibility to reduce our consumption and utilize alternative water sources. We must also minimize waste generation and find new circular solutions of reusing and recycling the waste streams into new products, either ourselves or so that a third party can use them as raw material. We have set ambitious and absolute sustainability targets, that are to be achieved regardless of production growth. To be able to reach these targets we have several large projects planned that will contribute significantly."

All Perstorp production plants use water for multiple purposes, including, for example: for cooling, as a solvent for chemical reactions, as a carrier for products, and as a heat-transfer medium. One way to reduce fresh water consumption is to purify and recycle wastewater. Perstorp sees this as an important core technology and is planning to invest in wastewater recycling projects at several of its production sites.

A key to reducing waste directed to disposal is to develop circular solutions that use waste streams as raw materials for new products. One example is Project Air, in which captured carbon dioxide together with residue streams from Perstorp's production plant in Stenungsund, Sweden, will serve as raw material for production of sustainable methanol that will replace all the virgin fossil methanol used by Perstorp in Europe.

13.09.2022

New technology purifies wastewater from textile dyeing by using graphene

The substance graphene can become increasingly important as a component in textile catalysts when purifying water from textile dyeing as has been shown in a recently completed doctoral project at the University of Borås.

In his project, Milad Asadi, a new doctor in Textile Technology, has modified conventional yarn by encapsulating iron particles in graphene and developed a multifunctional smart e-textile. The focus was on developing a method for purifying wastewater from textile dyeing. The smart e-textile acts as a catalyst that causes the substance hydrogen peroxide to be formed, which is needed in order to break down pollutants in wastewater.

The project has generated a complete textile reactor for the treatment of wastewater through the so-called electro-Fenton technology, which is mainly used industrially to purify wastewater. The novelty of the technology is to use the properties of both graphene and iron, which is the main catalyst.

The substance graphene can become increasingly important as a component in textile catalysts when purifying water from textile dyeing as has been shown in a recently completed doctoral project at the University of Borås.

In his project, Milad Asadi, a new doctor in Textile Technology, has modified conventional yarn by encapsulating iron particles in graphene and developed a multifunctional smart e-textile. The focus was on developing a method for purifying wastewater from textile dyeing. The smart e-textile acts as a catalyst that causes the substance hydrogen peroxide to be formed, which is needed in order to break down pollutants in wastewater.

The project has generated a complete textile reactor for the treatment of wastewater through the so-called electro-Fenton technology, which is mainly used industrially to purify wastewater. The novelty of the technology is to use the properties of both graphene and iron, which is the main catalyst.

“Previous research has mainly been about the treatment of wastewater by using chemicals to break down the textile dyes. My project is the first where graphene, which is electrically conductive, is used to encapsulate iron. The e-textile can also be used several times, unlike when chemicals are used and which are then rinsed off. The challenge in the project was to scale up the technology so that the treated yarn can be fed into automatic knitting machines”, explained Milad Asadi.

The e-textile catalyst can be reused and hydrogen peroxide is formed internally inside the reactor, which reduces the use of biological catalysts, making the technology more sustainable compared to chemical methods.

Quelle:

University of Borås - The Swedish School of Textiles

Foto: Pixabay
26.07.2021

Lenzing investiert GBP 20 Mio. in Abwasseraufbereitung am Standort Grimsby

  • Volle Auslastung der Produktionskapazitäten am Standort möglich
  • Neue EU-Umweltauflagen ab 2024 werden zeitgerecht und vollständig erfüllt

Die Lenzing Gruppe, weltweiter Anbieter von holzbasierten Spezialfasern für die Textil- und Vliesstoffindustrie, investiert GBP 20 Mio. (umgerechnet EUR 23,3 Mio.) in die Errichtung einer neuen, hochmodernen Abwasseraufbereitungsanlage am Standort Grimsby, Großbritannien. Das Unternehmen setzt damit eine geplante Maßnahme zur Reduzierung der Abwasseremissionen bis 2022 um.

Lenzing verfügt mit der Implementierung dieses Projekts an allen Produktionsstandorten über biologische Abwasseraufbereitungsanlagen nach dem Qualitätsstandard der besten verfügbaren Technik (BVT, engl. best available techniques = BAT). Das Anlagendesign mit neuer Technologie, die im Rahmen eines Forschungsprojekts entwickelt wurde, erfüllt alle Vorgaben der britischen Regulierung und wird von den lokalen Behörden unterstützt.

  • Volle Auslastung der Produktionskapazitäten am Standort möglich
  • Neue EU-Umweltauflagen ab 2024 werden zeitgerecht und vollständig erfüllt

Die Lenzing Gruppe, weltweiter Anbieter von holzbasierten Spezialfasern für die Textil- und Vliesstoffindustrie, investiert GBP 20 Mio. (umgerechnet EUR 23,3 Mio.) in die Errichtung einer neuen, hochmodernen Abwasseraufbereitungsanlage am Standort Grimsby, Großbritannien. Das Unternehmen setzt damit eine geplante Maßnahme zur Reduzierung der Abwasseremissionen bis 2022 um.

Lenzing verfügt mit der Implementierung dieses Projekts an allen Produktionsstandorten über biologische Abwasseraufbereitungsanlagen nach dem Qualitätsstandard der besten verfügbaren Technik (BVT, engl. best available techniques = BAT). Das Anlagendesign mit neuer Technologie, die im Rahmen eines Forschungsprojekts entwickelt wurde, erfüllt alle Vorgaben der britischen Regulierung und wird von den lokalen Behörden unterstützt.

Die derzeitige Abwassersituation am Standort entspricht der EU-Wasser-Rahmenrichtlinie sowie sämtlichen lokalen Gesetzen und Vorschriften. Die Genehmigung der Investition durch den Aufsichtsrat stellt sicher, dass noch in diesem Jahr mit dem Bau begonnen und die Inbetriebnahme rechtzeitig vor Inkrafttreten der von Großbritannien ratifizierten EU-Richtlinie1 erfolgen kann. Das Investment ist das größte seit der Inbetriebnahme dieses Lyocellstandortes, der insbesondere Premiumprodukte für technische und innovative Marktsegmente erzeugt.

Neben der Modernisierung der Abwasseraufbereitungsanlage am Standort Purwakarta (Indonesien) stellt die Implementierung der neuen Anlage in Grimsby eine weitere wichtige Maßnahme zur Reduzierung der gruppenweiten Abwasseremissionen um 20 Prozent bis 2022 (Ausgangsbasis 2014) dar. Der verantwortungsbewusste Umgang mit Wasser ist einer der Kernbereiche der Lenzing Nachhaltigkeitsstrategie „Naturally positive“. Wesentliche Themen dafür sind die effiziente Wassernutzung bei der Produktion und der Einsatz modernster Wasseraufbereitungstechnologien.

Weitere Informationen:
Lenzing Abwasseraufbereitung Lenzing AG
Quelle:

Lenzing AG